DKL International

DKL International was a medical technology company primarily known for developing and marketing the LifeGuard, a device claimed to detect human heartbeats from a distance. The company positioned the technology for use in search and rescue, law enforcement, and security applications. However, the device became the subject of significant controversy and legal action after independent testing by government agencies, including the FBI and Sandia National Laboratories, failed to verify its efficacy. The company's claims were ultimately widely discredited, leading to its cessation of major operations in the healthcare and security sectors.